340-408 uF 110-125 VAC ±20% Volts Round Start Capacitor - Pack of 2

Key Features

• Capacitance: 340-408 MFD/uF
• Voltage: 110-125 VAC
• Frequency: 50/60 Hz
• Tolerance: ±20%
• Operating Temperature: -40°C to +65°C (-40°F to 149°F)
• Shape: Round with a moisture and oil-resistant case
• Terminals: Standard 1/4 inch dual blade quick-connect
• Duty Cycle: Rated for up to 20 starts per hour at a 3-second duration
• Quantity: Includes two capacitors

Replaces / Cross-Reference Part Numbers

• Replaces any start capacitor with the same capacitance range and voltage rating.
• Commonly replaces part numbers such as Packard PMJ340.
• Interchangeable with capacitors from brands like BMI and TEMCo that meet equivalent electrical specifications.

Compatibility & Fitment

• Designed for use in single-phase AC electric motors to provide starting torque.
• Suitable for applications including HVAC units, air compressors, well pumps, refrigeration units, and various gear motors.
• Features a standard round case and snap-in mounting type for broad compatibility.

When to Replace

• Motor hums but fails to start or is slow to reach operating speed.
• Circuit breaker trips during motor startup.
• The existing capacitor shows physical damage, such as bulging, cracking, or leaking fluid.
• A multimeter test indicates the capacitance is outside the specified tolerance range.

Installation Tips

• Disconnect all electrical power to the motor before installation.
• Safely discharge the existing capacitor by shorting the terminals with a suitable resistor or an insulated tool.
• Confirm the new capacitor's uF/MFD range and voltage rating match the original part. The voltage rating can be equal to or higher than the original.
• Note the wire positions before disconnecting. AC start capacitors are non-polarized.
• Securely mount the new capacitor and firmly connect the wires to the terminals.